Herringbone large screen cart

Abstract

The utility model discloses a herringbone large screen cart which comprises a left supporting leg, a right supporting leg, a connecting plate, a hook and a tray, the left supporting leg and the right supporting leg both form a herringbone structure, and the left supporting leg and the right supporting leg are arranged in parallel at intervals. The bifurcated structures at the lower ends of the left supporting leg and the right supporting leg form four supporting points which are not located on the same straight line and are supported on the ground or a table top, the two ends of the connecting plate are fixedly connected with the upper sections, extending in the vertical direction, of the left supporting leg and the right supporting leg respectively, and the hook can be hung on the connecting plate in a sliding mode in the horizontal direction. The hook is provided with a connecting hole position for connecting a display screen, two ends of the tray are respectively and fixedly connected with the bifurcated root parts of the left supporting leg and the right supporting leg, a horizontal supporting surface for placing articles is formed on the tray, and the horizontal supporting surface can extend out of the front of the lower end of the display screen arranged on the hook by a set width. The large-size display screen can be stably supported, and packaging, storage and transportation are facilitated.

Description

Technical Field

[0001] The utility model relates to a display screen bracket, in particular to a herringbone large-screen trolley. Background Art

[0002] At present, public places (such as conference rooms, exhibition rooms, etc.) are all installed through floor-standing carts. The common carts are composed of a base plate, a column, a lifting adjustment member and a display screen connecting member. The lower end of the column is fixedly installed on the base plate, and a foot pad or a universal wheel is installed under the base plate. The display screen connecting member is installed on the column through a lifting adjustment member. The lifting adjustment member can adjust the height of the display screen. This type of cart requires a large-sized and heavy base plate for stable support, resulting in large size and heavy weight. It is inconvenient to pack and transport, and the manufacturing cost is high. It is inconvenient to push during use and is easy to tip over. In addition, its structure is complex and the manufacturing cost is high. Utility Model Content

[0003] In order to overcome the above-mentioned defects, the utility model provides a herringbone-shaped large-screen trolley, which has a simple structure and can achieve stable installation of a large-size display screen.

[0004] The utility model adopts a technical solution to solve its technical problems: a herringbone large-screen trolley, comprising a left supporting leg, a right supporting leg, a connecting plate, a hook and a tray, the left supporting leg and the right supporting leg both forming a "herringbone" structure, the left supporting leg and the right supporting leg are arranged in parallel and at intervals, the bifurcated structure at the lower ends of the left supporting leg and the right supporting leg forms four supporting points that are not in the same straight line and are supported on the ground or a table top, the two ends of the connecting plate are respectively fixedly connected to the upper sections of the left supporting leg and the right supporting leg extending in the vertical direction, the hook can be slidably hung on the connecting plate in the horizontal direction, the hook is provided with a connecting hole for connecting the display screen, the two ends of the tray are respectively fixedly connected to the bifurcated roots of the left supporting leg and the right supporting leg, a horizontal supporting surface for placing articles is formed on the tray, and the horizontal supporting surface can extend out to a set width in front of the lower end of the display screen installed on the hook.

[0005] As a further improvement of the present invention, the left supporting leg and the right supporting leg both include a front supporting rod and a rear supporting rod, the upper section of the front supporting rod is a front vertical extension section, the lower section of the front supporting rod is a front inclined extension section which has an obtuse angle with the front vertical extension section, the upper section of the rear supporting rod is a rear vertical extension section, the lower section of the rear supporting rod is a rear inclined extension section which has an obtuse angle with the rear vertical extension section, the rear vertical extension section is fixedly connected with the front vertical extension section to form an integral structure, and the front inclined extension section and the rear inclined extension section are inclinedly extended toward the front and rear respectively to form a forked structure.

[0006] As a further improvement of the present invention, the length of the front vertical extension section is greater than that of the rear vertical extension section, and both ends of the connecting plate are fixedly connected to the side walls of the front vertical extension sections of the left supporting leg and the right supporting leg respectively.

[0007] As a further improvement of the present invention, a plurality of connecting threaded holes are arranged at intervals from top to bottom on the side wall of the front vertical extension section of the front support rod, and vertically extending connecting walls are formed at both ends of the connecting plate. At least two connecting through holes are provided on the connecting wall from top to bottom, and the distance between adjacent connecting through holes is consistent with the distance between adjacent threaded holes on the side wall of the vertical extension section. Connecting screws are passed through the connecting through holes, and the connecting screws are screwed to the threaded holes on the side wall of the front vertical extension section so that the vertical wall of the connecting plate and the front vertical extension section of the front support rod are fixedly positioned, and the connecting through holes on the connecting walls on both sides of the connecting plate are opposite to the threaded holes of different heights so that the heights of the connecting plates are different.

[0008] As a further improvement of the present invention, the connecting plate includes an L-shaped side panel and a cross rail, the two L-shaped side panels are symmetrically arranged, the two cross rails are arranged from top to bottom, and the two cross rails are arranged in parallel, the two ends of the two cross rails are respectively fixedly connected to one side wall of the L-shaped side panel to form a square frame structure, the other side walls of the two L-shaped side panels are connected to the left supporting leg and the right supporting leg, and the hooks are hung on the two cross rails.

[0009] As a further improvement of the present invention, the connecting plate also includes a reinforced support plate, which includes a connecting bottom plate and a supporting side plate, and the two supporting side plates are integrally formed on both sides of the connecting bottom plate. The upper and lower ends of the connecting bottom plate are respectively fixedly connected to the front sides of the two horizontal rails of the connecting plate, and a number of audio-visual peripheral equipment connection holes are provided on the connecting bottom plate. The audio-visual peripheral equipment holes can be fixedly connected to the brackets of the audio-visual peripheral equipment, and the upper and lower ends of the supporting side plates are respectively fixedly connected to the side walls opposite to the two horizontal rails, and the upper and lower ends of the support plate are tightly against the side wall surfaces opposite to the two horizontal rails in the upper and lower directions.

[0010] As a further improvement of the present invention, the front support rod and the rear support rod are both integrally formed structures by bending pipe fittings, and the left support leg and the right support leg also include a support leg connecting tube, a front support rod extension tube and a rear support rod extension tube, one end of the two support leg connecting tubes can be respectively inserted into the inner side of the lower end of the front support rod and the rear support rod, and the other end of the two support leg connecting tubes can be respectively inserted into the inner side of the upper end of the front support rod extension tube and the rear support rod extension tube. The side walls of the front support rod and the rear support rod lower ends and the side walls of the front support rod extension tube and the rear support rod extension tube are all provided with a plurality of adjustment through holes arranged along their generatrix directions at intervals, and the side walls of the support leg connecting tube are provided with a plurality of adjustment screw holes arranged along their generatrix directions, and the distance between adjacent adjustment through holes is consistent with the distance between adjacent adjustment screw holes, and the adjustment screws are penetrated in the adjustment through holes, and the adjustment screws are screwed with the adjustment screw holes so that the front support rod and the rear support rod are respectively fixedly connected to the front support rod extension tube and the rear support rod extension tube through the support leg connecting tube.

[0011] As a further improvement of the present invention, the lower ends of the front support rod extension tube and the rear support rod extension tube are bent to form vertically extending support sections, and universal wheels are fixedly mounted on the lower ends of the support sections.

[0012] As a further improvement of the utility model, the horizontal supporting surface of the pallet is further provided with a hollow perforation, in which a debris containing tube is inserted, and the upper end edge of the debris containing tube forms a radially outward expansion retaining ring, and the radially outward expansion retaining ring is stopped on the upper side of the horizontal supporting surface of the pallet, and the debris containing tube extends downward from the horizontal supporting surface of the pallet.

[0013] As a further improvement of the present invention, the pallet is a sheet metal bending structure, which also includes a V-shaped main body and a rib formed by bending in opposite directions from the two side walls of the V-shaped main body. One side wall of the V-shaped main body forms a horizontal supporting surface of the pallet, and pallet connecting holes are provided at both ends of the other side wall of the V-shaped main body. Two L-shaped pallet connecting pieces are also provided. One side wall of the two pallet connecting pieces are respectively fixed to the side walls of the left supporting leg and the right supporting leg, and a pallet positioning screw hole is provided on the other side wall of the pallet connecting piece. The other side wall of the V-shaped main body of the pallet is flat on the other side wall of the pallet connecting piece, and the pallet connection holes and the pallet positioning screw holes of the two are directly connected and connected, and are fixed together by pallet positioning screws. The rib formed by bending on one side wall of the V-shaped main body extends obliquely downward, and the rib formed by bending on the other side wall of the V-shaped main body covers the top of the pallet connecting piece.

[0014] The beneficial effects of the utility model are as follows: the upper sections of the left and right supporting legs of the herringbone shape of the utility model are respectively fixedly connected to the connecting plate and the tray to form a firm frame structure; the upper sections of the left and right supporting legs of the herringbone shape form a stable support through a bifurcated structure; the entire structure is simple and is assembled through pipe fittings and hardware plates; the overall manufacturing cost is low and the structural strength is high; it can achieve stable support for large-size display screens; and the size of the parts is small after the parts are disassembled, which is convenient for packaging, storage and transportation; the overall support is stable, and there is no risk of the display screen tipping over during use; a horizontal supporting surface is formed on the tray for placing small display peripheral products; a sundries holding cylinder is also provided on the horizontal supporting surface for placing small items that are easy to roll off, thereby realizing the storage and placement of office and display peripheral products, and being convenient for use in public places. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional exploded view of the utility model;

[0016] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0017] Figure 3 for Figure 1 Enlarged view of middle part B;

[0018] Figure 4 It is a three-dimensional diagram of the connection plate of the utility model;

[0019] Figure 5 It is the front view of the utility model;

[0020] Figure 6 It is a right side view of the utility model;

[0021] Figure 7 It is a top view of the utility model;

[0022] Figure 8 It is a three-dimensional diagram of the utility model. DETAILED DESCRIPTION

[0023] Embodiment: A herringbone large-screen cart comprises a left supporting leg 1, a right supporting leg 2, a connecting plate 3, a hook 4 and a tray 5, wherein the left supporting leg 1 and the right supporting leg 2 both form a "herringbone" structure, the left supporting leg 1 and the right supporting leg 2 are arranged in parallel and spaced apart, and the bifurcated structures at the lower ends of the left supporting leg 1 and the right supporting leg 2 form four supporting points that are not in the same straight line and are supported on the ground or a table top, the two ends of the connecting plate 3 are respectively fixedly connected to the upper sections of the left supporting leg 1 and the right supporting leg 2 extending in the vertical direction, the hook 4 can be slidably hung on the connecting plate 3 in the horizontal direction, and the hook 4 is provided with a connecting hole 41 for connecting the display screen, the two ends of the tray 5 are respectively fixedly connected to the bifurcated roots of the left supporting leg 1 and the right supporting leg 2, and a horizontal supporting surface 51 for placing items is formed on the tray 5, and the horizontal supporting surface 51 can extend out to a set width in front of the lower end of the display screen installed on the hook 4.

[0024] The front of the display screen refers to the direction of viewing the display screen. The left support leg 1 and the right support leg 2 are distributed on the left and right sides and placed vertically. The lower ends of the left support leg 1 and the right support leg 2 form a bifurcated structure extending in the front and rear directions respectively, so that the support legs form four support points on the ground, and the four support points are distributed on two parallel straight lines to achieve stable support for the cart. The connecting plate 3 and the tray 5 are respectively fixedly installed on the left support leg 1 and the right support leg 2 at intervals in the upper and lower parts, so that the upper sections of the left support leg 1 and the right support leg 2 form a square frame-shaped support structure with the connecting plate 3 and the tray 5, ensuring the stability of the entire cart structure. A large-size display screen can be The hook 4 can be hung on the connecting plate 3, and some small peripheral items such as a remote control, a red light pen, a projection pen, a page turning pen, etc. can be placed on the tray 5, which is convenient for use with a display screen in public places. The overall structure of the cart is simple, and it is stably supported by two "human" shaped supporting legs, avoiding the use of a heavy base, and the display screen is located on the supporting center plane of the supporting leg, and the lower end of the supporting leg extends and supports along the supporting surface back and forth, so the support is stable, and a large-size display screen will not tip over when it is used or pushed, and the overall structure occupies a small space, is light in weight, and has a low manufacturing cost, and is very convenient to pack, transport, and use.

[0025] The left supporting leg 1 and the right supporting leg 2 both include a front supporting rod 11 and a rear supporting rod 12, wherein the upper section of the front supporting rod 11 is a front vertical extension section 111, and the lower section of the front supporting rod 11 is a front inclined extension section 112 which has an obtuse angle with the front vertical extension section 111, the upper section of the rear supporting rod 12 is a rear vertical extension section 121, and the lower section of the rear supporting rod 12 is a rear inclined extension section 122 which has an obtuse angle with the rear vertical extension section 121, the rear vertical extension section 121 is fixedly connected to the front vertical extension section 111 to form an integral structure, and the front inclined extension section 112 and the rear inclined extension section 122 extend obtusely toward the front and rear respectively to form a forked structure. By fixing the front vertical extension section 111 of the front support rod 11 with the rear vertical extension section 121 of the rear support rod 12, the front inclined extension section 112 and the rear inclined extension section 122 are respectively extended and supported in the front and rear directions to form a "human" shaped structure as a whole. The front vertical extension section 111 and the rear vertical extension section 121 are preferably fixedly connected by welding to form an integrated structure.

[0026] The length of the front vertical extension section 111 is greater than that of the rear vertical extension section 121, and the two ends of the connecting plate 3 are respectively fixedly connected to the side walls of the front vertical extension section 111 of the left supporting leg 1 and the right supporting leg 2. The connecting plate 3 is fixed to the front vertical extension section 111, and the rear vertical extension section 121 is only used to connect with the front vertical extension section 111.

[0027] A plurality of connecting threaded holes 1111 are arranged at intervals from top to bottom on the side wall of the front vertical extension section 111 of the front support rod 11, and connecting walls extending vertically are formed at both ends of the connecting plate 3, and at least two connecting through holes 321 are arranged on the connecting wall from top to bottom, and the distance between the adjacent connecting through holes 321 is consistent with the distance between the adjacent threaded holes on the side wall of the vertical extension section, and connecting screws are inserted into the connecting through holes 321, and the connecting screws are screwed with the threaded holes on the side wall of the front vertical extension section 111 so that the vertical wall of the connecting plate 3 and the front vertical extension section 111 of the front support rod 11 are fixed and positioned, and the connecting through holes 321 on the connecting walls on both sides of the connecting plate 3 are opposite to the threaded holes at different heights so that the height of the connecting plate 3 is different. The connecting plate 3 is installed on the front vertical extension sections 111 of the front support legs of different heights by connecting screws, so that the installation height of the display screen can be changed, thereby meeting the explanation of users of different heights and meeting the requirements of different viewing heights.

[0028] The connecting plate 3 includes an L-shaped side plate 32 and a cross rail 31. The two L-shaped side plates 32 are symmetrically arranged, the two cross rails 31 are arranged from top to bottom, and the two cross rails 31 are arranged in parallel. The two ends of the two cross rails 31 are respectively fixedly connected to one side wall of the L-shaped side plate 32 to form a square frame structure. The other side walls of the two L-shaped side plates 32 are connected to the left supporting leg 1 and the right supporting leg 2, and the hook 4 is hung on the two cross rails 31. The L-shaped side plates 32 of the connecting plate 3 are connected to the cross rail 31 to form a square frame structure. The L-shaped side plates 32 are used to connect with the left supporting leg 1 and the right supporting leg 2. The cross rail 31 is used to hang the hook 4 and allow the hook 4 to slide left and right. The cross rail 31 is preferably an aluminum alloy profile, which has high overall strength, is not easily deformed under pressure, has a smooth surface, and is convenient for the hook 4 to slide left and right. The L-shaped side plates 32 are preferably a sheet metal bending structure, which is convenient for the two side walls to be installed with the cross rail 31 and the supporting leg respectively.

[0029] The connection plate 3 also includes a reinforcing support plate 33, which includes a connecting bottom plate and a supporting side plate. The two supporting side plates are integrally formed on both sides of the connecting bottom plate. The upper and lower ends of the connecting bottom plate are respectively fixedly connected to the front sides of the two transverse rails 31 of the connecting plate 3. The connecting bottom plate is provided with a plurality of audio-visual peripheral equipment connection holes 331, which can be fixedly connected to the brackets of the audio-visual peripheral equipment. The upper and lower ends of the supporting side plates are respectively fixedly connected to the opposite side walls of the two transverse rails 31, and the upper and lower ends of the supporting plate are tightly against the opposite side wall surfaces of the two transverse rails 31 in the upper and lower directions. The reinforcing support plate 33 is fixedly connected to the two transverse rails 31, and the reinforcing support plate 33 is preferably fixedly installed in the middle part of the length direction of the two transverse rails 31. The reinforcing support plate 33 is preferably welded to the two transverse rails 31 to form an integral structure with the transverse rails 31. The overall welding can strengthen the strength of the transverse rails 31. The audio-visual peripheral equipment connection holes 331 on the reinforcing support plate 33 can be used to install cameras and VESA, etc.

[0030] The front support rod 11 and the rear support rod 12 are both integrally formed structures by bending pipe fittings. The left support leg 1 and the right support leg 2 also include a support leg connecting tube 13, a front support rod extension tube 14 and a rear support rod extension tube 15. One end of the two support leg connecting tubes 13 can be inserted into the inner side of the lower end of the front support rod 11 and the rear support rod 12, respectively. The other ends of the two support leg connecting tubes 13 can be inserted into the inner side of the upper end of the front support rod extension tube 14 and the rear support rod extension tube 15, respectively. The upper end side walls of the tube 14 and the rear support rod extension tube 15 are provided with a plurality of adjustment through holes arranged along the busbar direction thereof, and the side walls of the support leg connecting tube 13 are provided with a plurality of adjustment screw holes arranged along the busbar direction thereof, and the distance between adjacent adjustment through holes is consistent with the distance between adjacent adjustment screw holes, and an adjustment screw 16 is passed through the adjustment through holes, and the adjustment screw 16 is threadedly connected to the adjustment screw hole so that the front support rod 11 and the rear support rod 12 are respectively fixedly connected to the front support rod extension tube 14 and the rear support rod extension tube 15 through the support leg connecting tube 13. The left supporting leg 1 and the right supporting leg 2 are made into separate structures through the above structure. On the one hand, the packaging size can be reduced to facilitate packaging, storage and transportation. On the other hand, the height of the left supporting leg 1 and the right supporting leg 2 and the supporting capacity to prevent rollover can be adjusted. For the aesthetics of the cart, it is best to set end covers on the upper ends of the pipes of the front supporting rod 11 and the rear supporting rod 12 to achieve aesthetic and dust-proof effects. Wire holes can also be set on the supporting legs for the cables of the display screen to run inside the supporting legs, thereby further improving the cleanliness of the entire environment after the display screen is installed.

[0031] The lower ends of the front support rod extension tube 14 and the rear support rod extension tube 15 are bent to form a vertically extending support section, and the lower ends of the support sections are fixedly mounted with universal wheels 17. The universal wheels 17 are installed to facilitate the pushing of the cart.

[0032] The horizontal support surface 51 of the tray 5 is also provided with a hollow perforation, in which a debris receiving tube 52 is inserted, and the upper edge of the debris receiving tube 52 forms a radially outward expansion retaining ring, which stops at the upper side of the horizontal support surface 51 of the tray 5, and the debris receiving tube 52 extends downward from the horizontal support surface 51 of the tray 5. The debris receiving tube 52 is convenient for placing some small items, such as pens, batteries, etc. The debris receiving tube 52 can be easily removed from the tray 5 for easy cleaning. The debris receiving tube 52 can be a metal stretch forming structure, and the radially outward expansion retaining ring at its edge can be an outward curling edge. A number of hollow holes can be set on the body of the debris receiving tube 52 to facilitate drainage during cleaning.

[0033] The pallet 5 is a sheet metal bending structure, which also includes a V-shaped main body and a rib formed by bending in opposite directions from the two side walls of the V-shaped main body. One side wall of the V-shaped main body forms a horizontal supporting surface 51 of the pallet 5, and pallet connecting holes 53 are provided at both ends of the other side wall of the V-shaped main body. Two L-shaped pallet connecting pieces 54 are also provided. One side wall of the two pallet connecting pieces 54 are respectively fixed to the side walls of the left supporting leg 1 and the right supporting leg 2, and a pallet positioning screw hole 55 is provided on the other side wall of the pallet connecting piece 54. The other side wall of the V-shaped main body of the pallet 5 is flatly attached to the other side wall of the pallet connecting piece 54, and the pallet connecting holes 53 and the pallet positioning screw holes 55 of the two are directly connected and fixed together by pallet positioning screws 56. The rib formed by bending on one side wall of the V-shaped main body extends obliquely downward, and the rib formed by bending on the other side wall of the V-shaped main body covers the top of the pallet connecting piece 54. One side wall of the V-shaped main body forms a horizontal supporting surface 51 for placing items, and the other side wall forms a connecting surface for fixing on the supporting leg. At the same time, the other side wall also forms a stopper for items on the horizontal supporting surface 51, so as to prevent items on the horizontal supporting surface 51 from falling. The ribs on both sides can improve the aesthetics of the tray 5 on the one hand, and on the other hand, can prevent the straight edge of the tray 5 from being exposed and causing scratches to the user, thereby playing a safety protection role. It is best to make the edges of the ribs into rounded corners, which can further play a safety protection effect.

Claims

1. A herringbone large screen trolley, characterized by: The invention comprises a left supporting leg (1), a right supporting leg (2), a connecting plate (3), a hook (4) and a tray (5), wherein the left supporting leg and the right supporting leg both form a "human" shaped structure, the left supporting leg and the right supporting leg are arranged in parallel and spaced apart, the bifurcated structures at the lower ends of the left supporting leg and the right supporting leg form four supporting points that are not in the same straight line and are supported on the ground or a table top, the two ends of the connecting plate are respectively fixedly connected to the upper sections of the left supporting leg and the right supporting leg extending in the vertical direction, the hook can be slidably hung on the connecting plate in the horizontal direction, the hook is provided with a connecting hole (41) for connecting a display screen, the two ends of the tray are respectively fixedly connected to the bifurcated roots of the left supporting leg and the right supporting leg, and a horizontal supporting surface (51) for placing items is formed on the tray, and the horizontal supporting surface can extend to a set width in front of the lower end of the display screen installed on the hook.

2. The herringbone large screen trolley according to claim 1, characterized in that: The left supporting leg and the right supporting leg both comprise a front supporting rod (11) and a rear supporting rod (12); the upper section of the front supporting rod is a front vertical extension section (111); the lower section of the front supporting rod is a front inclined extension section (112) which forms an obtuse angle with the front vertical extension section; the upper section of the rear supporting rod is a rear vertical extension section (121); the lower section of the rear supporting rod is a rear inclined extension section (122) which forms an obtuse angle with the rear vertical extension section; the rear vertical extension section is fixedly connected to the front vertical extension section to form an integral structure; the front inclined extension section and the rear inclined extension section extend obliquely toward the front and rear, respectively, to form a bifurcated structure.

3. The herringbone large screen trolley according to claim 2 is characterized in that: The length of the front vertical extension section is greater than that of the rear vertical extension section, and both ends of the connecting plate are fixedly connected to the side walls of the front vertical extension sections of the left supporting leg and the right supporting leg respectively.

4. The herringbone large screen trolley according to claim 3 is characterized by: A plurality of connecting threaded holes (1111) are arranged at intervals from top to bottom on the side wall of the front vertical extension section of the front support rod, and vertically extending connecting walls are formed at both ends of the connecting plate. At least two connecting through holes (321) are provided on the connecting wall from top to bottom, and the distance between adjacent connecting through holes is consistent with the distance between adjacent threaded holes on the side wall of the vertical extension section. Connecting screws are passed through the connecting through holes, and the connecting screws are screwed to the threaded holes on the side wall of the front vertical extension section so that the vertical wall of the connecting plate and the front vertical extension section of the front support rod are fixedly positioned. The connecting through holes on the connecting walls on both sides of the connecting plate are opposite to the threaded holes of different heights so that the heights of the connecting plates are different.

5. The herringbone large screen trolley according to claim 1 or 4, characterized in that: The connecting plate comprises an L-shaped side plate (32) and a cross rail (31), the two L-shaped side plates are symmetrically arranged, the two cross rails are arranged from top to bottom, and the two cross rails are arranged in parallel, the two ends of the two cross rails are respectively fixedly connected to one side wall of the L-shaped side plate to form a square frame structure, the other side walls of the two L-shaped side plates are connected to the left supporting leg and the right supporting leg, and the hooks are hung on the two cross rails.

6. The herringbone large screen trolley according to claim 5, characterized in that: The connecting plate also includes a reinforcing support plate (33), the reinforcing support plate includes a connecting bottom plate and a supporting side plate, the two supporting side plates are integrally formed on both sides of the connecting bottom plate, the upper and lower ends of the connecting bottom plate are respectively fixedly connected to the front side surfaces of the two transverse rails of the connecting plate, a plurality of audio-visual peripheral equipment connection holes (331) are provided on the connecting bottom plate, the audio-visual peripheral equipment holes can be fixedly connected to the brackets of the audio-visual peripheral equipment, the upper and lower ends of the supporting side plates are respectively fixedly connected to the side walls opposite to the two transverse rails, and the upper and lower ends of the supporting plate are tightly against the side wall surfaces opposite to the two transverse rails in the upper and lower directions.

7. The herringbone large screen trolley according to claim 2 is characterized by: The front support rod and the rear support rod are both pipe-bent integrally formed structures, and the left support leg and the right support leg also include a support leg connecting tube (13), a front support rod extension tube (14) and a rear support rod extension tube (15), one end of the two support leg connecting tubes can be respectively inserted into the inner side of the lower end of the front support rod and the rear support rod, and the other end of the two support leg connecting tubes can be respectively inserted into the inner side of the upper end of the front support rod extension tube and the rear support rod extension tube, and the lower end side walls of the front support rod and the rear support rod extension tube and the upper end side walls of the front support rod extension tube and the rear support rod extension tube are provided with a plurality of adjustment through holes arranged along the generatrix direction thereof at intervals, and the side walls of the support leg connecting tube are provided with a plurality of adjustment screw holes arranged along the generatrix direction thereof, and the distance between adjacent adjustment through holes is consistent with the distance between adjacent adjustment screw holes, and an adjustment screw (16) is penetrated in the adjustment through hole, and the adjustment screw is screwed with the adjustment screw hole so that the front support rod and the rear support rod are respectively fixedly connected to the front support rod extension tube and the rear support rod extension tube through the support leg connecting tube.

8. The herringbone large screen trolley according to claim 7, characterized in that: The lower ends of the front support rod extension tube and the rear support rod extension tube are bent to form a vertically extending support section, and a universal wheel (17) is fixedly mounted on the lower end of the support section.

9. The herringbone large screen trolley according to claim 1, characterized in that: The horizontal support surface of the tray is also provided with a hollow hole, in which a debris receiving tube (52) is inserted, and the upper edge of the debris receiving tube forms a radially outward expansion retaining ring, which stops at the upper side of the horizontal support surface of the tray, and the debris receiving tube extends downward from the horizontal support surface of the tray.

10. The herringbone large screen trolley according to claim 1 or 9, characterized in that: The pallet is a sheet metal bending structure, which also includes a V-shaped main body and a rib formed by bending in an opposite direction from the two side walls of the V-shaped main body. One side wall of the V-shaped main body forms a horizontal supporting surface of the pallet. Two ends of the other side wall of the V-shaped main body are provided with pallet connection holes (53). Two L-shaped pallet connecting pieces (54) are also provided. One side wall of the two pallet connecting pieces is respectively fixedly connected to the side walls of the left supporting leg and the right supporting leg. The other side wall of the pallet connecting piece is provided with a pallet positioning screw hole (55). The other side wall of the V-shaped main body of the pallet is flatly attached to the other side wall of the pallet connecting piece, and the pallet connection holes and pallet positioning screw holes of the two are directly connected and connected, and are fixedly connected together by pallet positioning screws (56). The rib formed by bending on one side wall of the V-shaped main body extends obliquely downward, and the rib formed by bending on the other side wall of the V-shaped main body covers the top of the pallet connecting piece.

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